Luke 3:21 “When all the people were baptized, it came to pass that Jesus also was baptized; and while He prayed, the heaven was opened.”
This was, of course, before John was imprisoned. Jesus was baptized for a couple of reasons. He did so to fulfill prophecy. It connected Him with the ministry of John. Also, He did it as an example to His followers. In addition, the Father also used it as one of the times that He chose to speak on behalf of His Son.
Heavenly Father, thank You for the shining example of Christ. We know He is the One to follow in everything. What a mercy it is that You have given Him to be our Lord and Savior. Your ways are perfect! All glory be to You and to Your Son the Lord Jesus! In the Name of the Lord Jesus Christ I pray and praise You, Amen.